WO2015036744A1 - Microwave monitoring - Google Patents
Microwave monitoring Download PDFInfo
- Publication number
- WO2015036744A1 WO2015036744A1 PCT/GB2014/052730 GB2014052730W WO2015036744A1 WO 2015036744 A1 WO2015036744 A1 WO 2015036744A1 GB 2014052730 W GB2014052730 W GB 2014052730W WO 2015036744 A1 WO2015036744 A1 WO 2015036744A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wireless monitoring
- sensors
- monitoring according
- microwave
- frequency
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0015—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system
- A61B5/002—Monitoring the patient using a local or closed circuit, e.g. in a room or building
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/0507—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves using microwaves or terahertz waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/6804—Garments; Clothes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0228—Microwave sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/029—Humidity sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0015—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system
- A61B5/0024—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system for multiple sensor units attached to the patient, e.g. using a body or personal area network
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02438—Detecting, measuring or recording pulse rate or heart rate with portable devices, e.g. worn by the patient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/0816—Measuring devices for examining respiratory frequency
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/6804—Garments; Clothes
- A61B5/6805—Vests
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/681—Wristwatch-type devices
Definitions
- This invention relates to microwave monitoring.
- the chart moreover, carries only limited information, and for a full history, the clinician needs to access the main file, which will not be on the ward. And it has been known for paper items to get misfiled or simply lost. It is proposed to use electronic recording means, more specifically touch screen tablet computers such as the iPad, personal to each patient, for recording patient condition, as well as providing an appointment diary, a drug schedule and many other important information items, so that all the information a clinician needs is instantly available at any time.
- the present invention provides methods and apparatus whereby measurements and data can be entered into a record keeping system without risk of human error, and with more frequent if not, when required, continuous monitoring.
- the invention comprises wireless monitoring of microwave-responsive sensors integrated into a record keeping system.
- the record keeping system may comprise individual electronic data logging devices, such, for example, as patient-specific tablets in a hospital environment.
- the microwave-responsive sensors may comprise garments incorporating electrically conductive elements, such as threads, woven or knitted into the garments, perhaps, that give different microwave responses under different conditions.
- electrically conductive elements such as threads, woven or knitted into the garments, perhaps, that give different microwave responses under different conditions.
- an upper- body garment incorporating knitted conductive threads will give different microwave responses under different conditions of stretch, and this can be an indication of a patient's breathing rate and whether breathing is normal or shallow.
- a wristband sensor may be monitored to indicate pulse rate.
- Microwave responsive fabrics may be used to monitor temperature and humidity, and may be used to indicate abnormal sweating or bedwetting, as well as abnormally high or low temperature.
- Microwave interrogation of sensors can be effected by sensing the amplitude of reflected, transmitted or absorbed microwave energy, or a change in frequency, particularly a resonant frequency.
- Interrogation can be effected by measuring response to a sweep through a frequency range of a transmitted signal.
- Individual sensors can comprise an identification feature whereby a plurality of sensors may be interrogated by a common transmitted signal and responses matched to the sensors.
- An identification feature might, for example, be a particular resonant frequency. A sweep through a frequency range including all the resonant frequencies would yield reflected signals, say, at or near those resonances, and these would show up as peaks in an amplitude/frequency graph on which the departures from the resonances could be measured to give an indication of the variable involved.
- Wireless monitoring according to the invention will now be described with reference to the accompanying drawings, in which:
- Figure 1 is a view of a fabric with electrically conductive elements
- Figure 2 is a close-up of an electrically conductive element of Figure 1 ;
- Figure 3 is a view of a garment incorporating microwave-responsive sensors
- FIG. 4 is a diagrammatic illustration of a microwave generator/receiver/analyser set-up with multiple tablets.
- Figure 5 is graph of amplitude against frequency showing transmitted and reflected signals.
- the drawings illustrate methods of gathering information from a subject by measuring at least one property of an electrically conductive textile at a microwave frequency.
- Figures 1 and 2 illustrate a fabric 11 incorporating electrically conductive threads 12.
- the fabric 11 is a knitted fabric, principally of elastomeric threads 13, covered with polyester fibres.
- the conductive threads 12 are of polyethylene multifilament yarn coated with a nanolayer of silver, copper or other high conductivity metal.
- FIG. 1 illustrates a vest 15, which incorporates patches 16 of fabric such as fabric 11.
- Figure 4 illustrates a microwave set-up for making measurements of properties of a textile 11, comprising a microwave generator 41 and a microwave receiver/analyser 42. These are capable of operation over the frequency range 9kHz to 20GHz.
- the receiver/analyser 42 communicates with tablets 43a, 43b, 43c, 43d.
- the generator 41 could, of course, be connected to the textile 11 by a cable 43, typically a coaxial cable with an N-type connector attached to a terminal 17 attached to a conductive thread ( Figure 1), and the receiver/analyser 42 may be similarly connected.
- a cable 43 typically a coaxial cable with an N-type connector attached to a terminal 17 attached to a conductive thread ( Figure 1)
- the receiver/analyser 42 may be similarly connected.
- either the generator 41 or the receiver 42 or both may be wirelessly connected, to give a wearer of a garment improved freedom of movement/activity, and this is especially useful when more than one tablet is involved.
- Microwave power of the order of lmW can be effective for communication between generator and textile and receiver and textile over distances of the order of a few metres while being at a safe level for subjects and attendant personnel.
- the arrangement may be used for patient monitoring, as, for example, for ECG monitoring, or blood pressure monitoring, using, for example, stretchable threads in a sleeve, or temperature monitoring, using threads with a high rate of change of resistance with temperature, as taught for example in WO2009001108.
- the arrangement may also be used for monitoring personnel in hazardous environments to give indication of ambient conditions, and for monitoring athletes and other sportspeople in training or during actual performance.
- Provision for cable connection might be used for calibration. Particularly accurate measurement may be made if the measuring frequency is close to a resonant frequency of the textile. At such frequency, the reflected or transmitted radiation may be at a maximum or minimum, changing rapidly as the measurement frequency or the resonant frequency changes.
- Figure 5 is a graph of amplitude against frequency, showing a transmission signal having four signals Sa, Sb, Sc, Sd at different frequencies and reflected signals S'a, S'b, S'c, S'd, at slightly different frequencies, the frequency shifts in each case being due to the deviation of a measured property from it expected value, but each reflected signal being so close to its transmitted counterpart as to be readily identifiable.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Transmitters (AREA)
- Radar Systems Or Details Thereof (AREA)
- Burglar Alarm Systems (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1605350.6A GB2534500A (en) | 2013-09-10 | 2014-09-10 | Microwave monitoring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1316128.6 | 2013-09-10 | ||
GB201316128A GB201316128D0 (en) | 2013-09-10 | 2013-09-10 | Microwave monitoring |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015036744A1 true WO2015036744A1 (en) | 2015-03-19 |
Family
ID=49487022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2014/052730 WO2015036744A1 (en) | 2013-09-10 | 2014-09-10 | Microwave monitoring |
Country Status (2)
Country | Link |
---|---|
GB (2) | GB201316128D0 (en) |
WO (1) | WO2015036744A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090013728A1 (en) * | 2005-09-29 | 2009-01-15 | Smartlife Technology Limited | Knitting techniques |
GB2456822A (en) * | 2008-01-25 | 2009-07-29 | Smartlife Technology Ltd | Transducer with knitted structure |
US20110040498A1 (en) * | 2008-02-15 | 2011-02-17 | Haiying Huang | Passive Wireless Antenna Sensor for Strain, Temperature, Crack and Fatigue Measurement |
US20120139731A1 (en) * | 2010-12-01 | 2012-06-07 | At&T Intellectual Property I, L.P. | System and method for wireless monitoring of sports activities |
WO2013033724A1 (en) * | 2011-09-01 | 2013-03-07 | Mc10, Inc. | Electronics for detection of a condition of tissue |
GB2500000A (en) * | 2012-03-05 | 2013-09-11 | Univ Liverpool John Moores | Microwave monitoring using an electrically conductive textile |
US20140230563A1 (en) * | 2013-02-13 | 2014-08-21 | Board Of Regents, The University Of Texas System | Sensor assembly, method, and device for monitoring shear force and pressure on a structure |
-
2013
- 2013-09-10 GB GB201316128A patent/GB201316128D0/en not_active Ceased
-
2014
- 2014-09-10 WO PCT/GB2014/052730 patent/WO2015036744A1/en active Application Filing
- 2014-09-10 GB GB1605350.6A patent/GB2534500A/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090013728A1 (en) * | 2005-09-29 | 2009-01-15 | Smartlife Technology Limited | Knitting techniques |
GB2456822A (en) * | 2008-01-25 | 2009-07-29 | Smartlife Technology Ltd | Transducer with knitted structure |
US20110040498A1 (en) * | 2008-02-15 | 2011-02-17 | Haiying Huang | Passive Wireless Antenna Sensor for Strain, Temperature, Crack and Fatigue Measurement |
US20120139731A1 (en) * | 2010-12-01 | 2012-06-07 | At&T Intellectual Property I, L.P. | System and method for wireless monitoring of sports activities |
WO2013033724A1 (en) * | 2011-09-01 | 2013-03-07 | Mc10, Inc. | Electronics for detection of a condition of tissue |
GB2500000A (en) * | 2012-03-05 | 2013-09-11 | Univ Liverpool John Moores | Microwave monitoring using an electrically conductive textile |
US20140230563A1 (en) * | 2013-02-13 | 2014-08-21 | Board Of Regents, The University Of Texas System | Sensor assembly, method, and device for monitoring shear force and pressure on a structure |
Non-Patent Citations (2)
Title |
---|
A MASON ET AL: "FLEXIBLE E-TEXTILE SENSORS FOR REAL-TIME HEALTH MONITORING AT MICROWAVE FREQUENCIES-Shamma'a, FLEXIBLE E-TEXTILE SENSORS FOR REAL-TIME HEALTH MONITORING AT MICROWAVE FREQUENCIES", INTERNATIONAL JOURNAL ON SMART SENSING AND INTELLIGENT SYSTEMS, VOL. 7, NO. 1,, 1 March 2014 (2014-03-01), XP055156095, Retrieved from the Internet <URL:http://www.s2is.org/Issues/v7/n1/papers/paper3.pdf> [retrieved on 20141201] * |
HUANG HAIYING: "Flexible Wireless Antenna Sensor: A Review", IEEE SENSORS JOURNAL, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 13, no. 10, 30 August 2013 (2013-08-30), pages 3865 - 3872, XP011525591, ISSN: 1530-437X, [retrieved on 20130830], DOI: 10.1109/JSEN.2013.2242464 * |
Also Published As
Publication number | Publication date |
---|---|
GB2534500A (en) | 2016-07-27 |
GB201316128D0 (en) | 2013-10-23 |
GB201605350D0 (en) | 2016-05-11 |
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